Acridine derivative for therapeutical purposes



TtQTl-EELIN AND FRITZ llif'lj'LLElt, OF BASEL, $WTTZERLAND, A$STGNOItEt TU TI-TE IllIl-tld GHEMIUAL Wl'lltfifi FORMEJRLT' SANDOZ, 01E BASEL, SWTITZERLAJN'D AGRJCDTNE DERIVATIVE FDR THERAJPJEUTICAL TURTOSLEZS- lilo thawing, Application filed December 22, 192?, Serial lilo. M2908, and in Switzerland January El, mat.

lit has been found, that valuable acridine derivatives for therapeutical purposes can be obtained by coupling aminoand diaminoacridines, their halogenalkylates, or alkoxy substitution products of these compounds with bile acids to form bile acid salts. As bile acids for instance the unsaponified original acids as contained in the gall, such as glycocholic, taurocholic and glycodesoxyw cholic acid, further the products of saponification of same, such ascholic and desoxycholic acid, further the products of oxidation and partial anhydrization, such as dehydrocholic and apocholic acid enter into consideration.

The formation of these salts is easily carried out, if the two components are allowed to interact in suitable solvents. The interaction may also be performed in a convenient mannor by double decomposition of salts of the 20 original materials.

The new compounds possess a stronger antiparasitic action than the known acridine derivatives. They constitute in general orange yellow to yellow crystalline and micro-crys- 25 talline powders, soluble in hot alcohol and methanol, nearly insoluble in water and ether.

The following examples illustrate the invention:

Example l.-5,2 g. of 3.6-diamino-l0- e methylacridinium-chloride are dissolved in 150 cm. of water and poured, whilst stirring into a solution of 100 cm? of an aqueous solution of 9,5 g. of sodium cholate. The salt precipitates as a paste, but may easily be .35 crystallized from dilute alcohol. It crystallizes in form of fine yellow crystal needles. The new salt is difficultly soluble in water, relatively easily soluble in hot alcohol, in cold alcohol it is more diflicultly soluble. The

to solutions show the characteristic fluorescence of acridine salts.

The salt obtained according to this example HiN 1 N L aHnOnCO0H till Ewample 2.-5,2 g. of 3.6-diamino-l0- methylacridinium-chloride are dissolved in 200 cm. of water and allowed to react, as described in Example 1, with the sodium salt from 8,2 g. of desoxycholic acid, dissolved in 250 com. of water. The new desoxycholic salt is a microcrystalline yellow powder nearly insoluble in water and rather diilicultly soluble in alcohol, methanol, almost insoluble in ether. llt possesses a strong antiparasitic action. I

Example 3.5,9 g. of 2-ethoxy-d9-diaminoacridinehydrochloride and the sodium salt from 8,2 g. of desoxycholic acid are allowed to interact as described in the preceding examples. The desoxycholate of 2-ethoxy-6.9- diaminoacridine separates as a microcrystalline yellow powder. It is soluble in hot alcohol and methanol, nearly insoluble in ether and water.

Example 4.5,9 g. of 2-ethoxy-6.9-diaminoacridinehydrochloride and 9,5 g, of sodium cholate are allowed to interactin the manner described in the preceding examples. The cholate of 2-ethoxy-6.9-diaminoacridine separates as a yellow microcrystalline powder. lit is soluble in alcohol and methanol, diliicultly soluble in chloroform, almost insoluble in acetone, ether and water. It possesses a strong antiparasitic action.

' The salt obtained according to this example.

has most probably the following structural formula:

I NHr Emample 5.--The sodium salt from 8,2 g. of apocholic acid and 5,9 g. of 2-ethoxy-6.9- diaminoacridine hydrochloride are allowed to interact as stated in the preceding examples. The apocholate 2-ethoxy-6.9-diaminoacridine separates as a yellow microcrystalline powder; it is soluble in hot alcohol and methanol, nearly insoluble in Water an ether...

Example 6.The sodium salt from 8,3 g. of choleini c acid and 5,9 g. of 2-ethoxy-6.9-diaminoacridinehydrochloride are allowed to interact as previously stated. The choleinate of 2-ethoxy-6.9-diaminoacridine separates as a yellow microcrystalline powder. It is soluble in alcohol and methanol, nearly insoluble in water and ether.

What we claim is: 1 1. As new articles of manufacture, bile acid salts of amino-acridines, forming orange yellow to yellow crystalline and microcrystalline powders, soluble in hot alcohol and methanol, nearly insoluble in water and ether, possessing a strong antiparasitic action.

2. As new articles of manufacture, the salts of saponified bile acids with amino-acridines, forming orange yellow to yellow crystalline and microcrystalline powders, soluble in hot 0 alcohol and methanol, nearly insoluble in water and ether, possessing a strong antiparasitic action. a

3. As new articles of manufacture, the I cholates of amino-acridines, forming orange H yellow to yellow crystalline and microcrystalline powders, soluble in hot alcohol and methanol, nearly insoluble in water and ether, possessing a strong antiparasitic action.

4. As new articles of manufacture, the cho- 80 lates of diaminoacridine derivatives, forming orange lyile-llllow to yellow crystalline and microcrysta e powders, soluble in hot alcohol andmethanol, nearly insoluble in water and ether, possessing a strong antipara- 85 sitic action.

' 5. As new articles of manufacture, the cholates of alkoxydiaminoacridine derivatives, forming orange yellow to yellow .cr stalline and microcrystallinepowders, solub e in hot 40. alcohol and methanol, nearly insoluble in water and ether, possessing a strong antiparasitic action.

6. As new articles of manufacture, the cholate of 2-alko -6.9-diaminoacridines', form- 0., ing orange e ow to dyellow crystalline and mlcrocrysta line pow ers, soluble in hot alcohol and methanol, nearlyinsoluble in water and ether, possessing a strong antiparasitic action. 4' I 7. As a new artiele'of manufacture, the cholate of 2-ethoxy-6.9-diaminoacridine, formorange ellow to yellow crystalline and microcrysta line powder, soluble in hot alcohol and methanol, nearly insoluble in water and ether, possessing, a strong antiparasitic action.

In witness whereof we have hereunto/ ilgg2nred our names this 12th day of December,

' ERNST ROTHLINf FRITZMQULLER. 

